| blob | 5e6cd9577c63dbd3babfb29a9fff9d9ca668385e |
1 ;;; tramp-sh.el --- Tramp access functions for (s)sh-like connections
3 ;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 ;; 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 ;; (copyright statements below in code to be updated with the above notice)
8 ;; Author: Kai Großjohann <kai.grossjohann@gmx.net>
9 ;; Michael Albinus <michael.albinus@gmx.de>
10 ;; Keywords: comm, processes
11 ;; Package: tramp
13 ;; This file is part of GNU Emacs.
15 ;; GNU Emacs is free software: you can redistribute it and/or modify
16 ;; it under the terms of the GNU General Public License as published by
17 ;; the Free Software Foundation, either version 3 of the License, or
18 ;; (at your option) any later version.
20 ;; GNU Emacs is distributed in the hope that it will be useful,
21 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
22 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 ;; GNU General Public License for more details.
25 ;; You should have received a copy of the GNU General Public License
26 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
28 ;;; Code:
34 ;; Pacify byte-compiler. The function is needed on XEmacs only. I'm
35 ;; not sure at all that this is the right way to do it, but let's hope
36 ;; it works for now, and wait for a guru to point out the Right Way to
37 ;; achieve this.
38 ;;(eval-when-compile
39 ;; (unless (fboundp 'dired-insert-set-properties)
40 ;; (fset 'dired-insert-set-properties 'ignore)))
41 ;; Gerd suggests this:
43 ;; Note that dired is required at run-time, too, when it is needed.
44 ;; It is only needed on XEmacs for the function
45 ;; `dired-insert-set-properties'.
48 "*The minimum size of compressing where inline transfer.
49 When inline transfer, compress transfered data of file
50 whose size is this value or above (up to `tramp-copy-size-limit').
51 If it is nil, no compression at all will be applied."
56 "*The maximum file size where inline copying is preferred over an out-of-the-band copy.
57 If it is nil, inline out-of-the-band copy will be used without a check."
61 ;;;###tramp-autoload
63 "*Value of TERM environment variable for logging in to remote host.
64 Because Tramp wants to parse the output of the remote shell, it is easily
65 confused by ANSI color escape sequences and suchlike. Often, shell init
66 files conditionalize this setup based on the TERM environment variable."
70 ;; ksh on OpenBSD 4.5 requires, that $PS1 contains a `#' character for
71 ;; root users. It uses the `$' character for other users. In order
72 ;; to guarantee a proper prompt, we use "#$" for the prompt.
76 "///%s#$"
78 "String used to recognize end of output.
79 The '$' character at the end is quoted; the string cannot be
82 ;;;###tramp-autoload
86 ;; Initialize `tramp-methods' with the supported methods.
87 ;;;###tramp-autoload
97 ;;;###tramp-autoload
106 ;;;###tramp-autoload
108 'tramp-methods
121 ;;;###tramp-autoload
137 ;;;###tramp-autoload
153 ;;;###tramp-autoload
172 ;;;###tramp-autoload
188 ;;;###tramp-autoload
196 ;;;###tramp-autoload
208 ;;;###tramp-autoload
222 "ssh"
223 " -o ControlPath=%t.%%r@%%h:%%p"
228 ;;;###tramp-autoload
234 ;;;###tramp-autoload
240 ;;;###tramp-autoload
251 ;;;###tramp-autoload
263 ;;;###tramp-autoload
275 ;;;###tramp-autoload
288 ;;;###tramp-autoload
295 ;;;###tramp-autoload
301 ;;;###tramp-autoload
307 ;;;###tramp-autoload
313 ;;;###tramp-autoload
321 ;;;###tramp-autoload
329 ;;;###tramp-autoload
333 ;; ("%h") must be a single element, see
334 ;; `tramp-compute-multi-hops'.
337 "env 'TERM=%s' 'PROMPT_COMMAND=' 'PS1=%s'"
338 tramp-terminal-type
339 tramp-initial-end-of-output))
342 ;;;###tramp-autoload
353 ;;;###tramp-autoload
363 ;;;###tramp-autoload
443 ;; "getconf PATH" yields:
444 ;; HP-UX: /usr/bin:/usr/ccs/bin:/opt/ansic/bin:/opt/langtools/bin:/opt/fortran/bin
445 ;; Solaris: /usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin
446 ;; GNU/Linux (Debian, Suse): /bin:/usr/bin
447 ;; FreeBSD: /usr/bin:/bin:/usr/sbin:/sbin: - beware trailing ":"!
448 ;; IRIX64: /usr/bin
453 "*List of directories to search for executables on remote host.
454 For every remote host, this variable will be set buffer local,
455 keeping the list of existing directories on that host.
457 You can use `~' in this list, but when searching for a shell which groks
458 tilde expansion, all directory names starting with `~' will be ignored.
460 `Default Directories' represent the list of directories given by
462 entry on top of this list, because these are the default
463 directories for POSIX compatible commands.
465 `Private Directories' are the settings of the $PATH environment,
466 as given in your `~/.profile'."
481 "*List of environment variables to be set on the remote host.
483 Each element should be a string of the form ENVVARNAME=VALUE. An
484 entry ENVVARNAME= diables the corresponding environment variable,
485 which might have been set in the init files like ~/.profile.
487 Special handling is applied to the PATH environment, which should
488 not be set here. Instead of, it should be set via `tramp-remote-path'."
493 "*Alist specifying extra arguments to pass to the remote shell.
494 Entries are (REGEXP . ARGS) where REGEXP is a regular expression
495 matching the shell file name and ARGS is a string specifying the
496 arguments.
498 This variable is only used when Tramp needs to start up another shell
499 for tilde expansion. The extra arguments should typically prevent the
500 shell from reading its init file."
502 ;; This might be the wrong way to test whether the widget type
503 ;; `alist' is available. Who knows the right way to test it?
518 "List of pattern/action pairs.
519 Whenever a pattern matches, the corresponding action is performed.
520 Each item looks like (PATTERN ACTION).
522 The PATTERN should be a symbol, a variable. The value of this
523 variable gives the regular expression to search for. Note that the
525 appended to it.
527 The ACTION should also be a symbol, but a function. When the
535 "List of pattern/action pairs.
536 This list is used for copying/renaming with out-of-band methods.
541 "(echo begin 600 /tmp/tramp.$$; tail +2) | uudecode
542 cat /tmp/tramp.$$
543 rm -f /tmp/tramp.$$"
544 "Shell function to implement `uudecode' to standard output.
545 Many systems support `uudecode -o /dev/stdout' or `uudecode -o -'
546 for this or `uudecode -p', but some systems don't, and for them
550 "%s -e '
551 use File::Spec;
554 sub recursive {
555 my ($volume, @dirs) = @_;
556 my $real = realpath(File::Spec->catpath(
558 if ($real) {
559 my ($vol, $dir) = File::Spec->splitpath($real, 1);
560 return ($vol, File::Spec->splitdir($dir));
561 }
562 else {
563 my $last = pop(@dirs);
564 ($volume, @dirs) = recursive($volume, @dirs);
565 push(@dirs, $last);
566 return ($volume, @dirs);
567 }
568 }
570 $result = realpath($ARGV[0]);
571 if (!$result) {
572 my ($vol, $dir) = File::Spec->splitpath($ARGV[0], 1);
573 ($vol, @dirs) = recursive($vol, File::Spec->splitdir($dir));
576 }
580 }
584 "Perl script to produce output suitable for use with `file-truename'
585 on the remote file system.
586 Escape sequence %s is replaced with name of Perl binary.
590 "%s -e 'sub case {
591 my $str = shift;
592 if ($ARGV[2]) {
593 return lc($str);
594 }
595 else {
596 return $str;
597 }
598 }
600 @files = readdir(d); closedir(d);
601 foreach $f (@files) {
602 if (case(substr($f, 0, length($ARGV[1]))) eq case($ARGV[1])) {
605 }
606 else {
608 }
609 }
610 }
613 "Perl script to produce output suitable for use with
614 `file-name-all-completions' on the remote file system. Escape
615 sequence %s is replaced with name of Perl binary. This string is
618 ;; Perl script to implement `file-attributes' in a Lisp `read'able
619 ;; output. If you are hacking on this, note that you get *no* output
620 ;; unless this spits out a complete line, including the '\n' at the
621 ;; end.
622 ;; The device number is returned as "-1", because there will be a virtual
623 ;; device number set in `tramp-sh-handle-file-attributes'.
625 "%s -e '
626 @stat = lstat($ARGV[0]);
627 if (!@stat) {
629 exit 0;
630 }
631 if (($stat[2] & 0170000) == 0120000)
632 {
633 $type = readlink($ARGV[0]);
635 }
636 elsif (($stat[2] & 0170000) == 040000)
637 {
639 }
640 else
641 {
643 };
646 printf(
648 $type,
649 $stat[3],
650 $uid,
651 $gid,
652 $stat[8] >> 16 & 0xffff,
653 $stat[8] & 0xffff,
654 $stat[9] >> 16 & 0xffff,
655 $stat[9] & 0xffff,
656 $stat[10] >> 16 & 0xffff,
657 $stat[10] & 0xffff,
658 $stat[7],
659 $stat[2],
660 $stat[1] >> 16 & 0xffff,
661 $stat[1] & 0xffff
663 "Perl script to produce output suitable for use with `file-attributes'
664 on the remote file system.
665 Escape sequence %s is replaced with name of Perl binary.
669 "%s -e '
672 @list = readdir(DIR);
673 closedir(DIR);
674 $n = scalar(@list);
676 for($i = 0; $i < $n; $i++)
677 {
678 $filename = $list[$i];
679 @stat = lstat($filename);
680 if (($stat[2] & 0170000) == 0120000)
681 {
682 $type = readlink($filename);
684 }
685 elsif (($stat[2] & 0170000) == 040000)
686 {
688 }
689 else
690 {
692 };
695 printf(
696 \"(\\\"%%s\\\" %%s %%u %%s %%s (%%u %%u) (%%u %%u) (%%u %%u) %%u.0 %%u t (%%u . %%u) (%%u . %%u))\\n\",
697 $filename,
698 $type,
699 $stat[3],
700 $uid,
701 $gid,
702 $stat[8] >> 16 & 0xffff,
703 $stat[8] & 0xffff,
704 $stat[9] >> 16 & 0xffff,
705 $stat[9] & 0xffff,
706 $stat[10] >> 16 & 0xffff,
707 $stat[10] & 0xffff,
708 $stat[7],
709 $stat[2],
710 $stat[1] >> 16 & 0xffff,
711 $stat[1] & 0xffff,
712 $stat[0] >> 16 & 0xffff,
713 $stat[0] & 0xffff);
714 }
716 "Perl script implementing `directory-files-attributes' as Lisp `read'able
717 output.
718 Escape sequence %s is replaced with name of Perl binary.
721 ;; These two use base64 encoding.
723 "%s -MMIME::Base64 -0777 -ne 'print encode_base64($_)' 2>/dev/null"
724 "Perl program to use for encoding a file.
725 Escape sequence %s is replaced with name of Perl binary.
726 This string is passed to `format', so percent characters need to be doubled.
727 This implementation requires the MIME::Base64 Perl module to be installed
731 "%s -MMIME::Base64 -0777 -ne 'print decode_base64($_)' 2>/dev/null"
732 "Perl program to use for decoding a file.
733 Escape sequence %s is replaced with name of Perl binary.
734 This string is passed to `format', so percent characters need to be doubled.
735 This implementation requires the MIME::Base64 Perl module to be installed
739 "%s -e '
740 # This script contributed by Juanma Barranquero <lektu@terra.es>.
741 # Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
742 # Free Software Foundation, Inc.
743 use strict;
745 my %%trans = do {
746 my $i = 0;
747 map {(substr(unpack(q(B8), chr $i++), 2, 6), $_)}
748 split //, q(ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/);
749 };
753 # We read in chunks of 54 bytes, to generate output lines
754 # of 72 chars (plus end of line)
757 while (my $data = <STDIN>) {
758 my $pad = q();
760 # Only for the last chunk, and only if did not fill the last three-byte packet
761 if (eof) {
762 my $mod = length($data) %% 3;
763 $pad = q(=) x (3 - $mod) if $mod;
764 }
766 # Not the fastest method, but it is simple: unpack to binary string, split
767 # by groups of 6 bits and convert back from binary to byte; then map into
768 # the translation table
769 print
770 join q(),
771 map($trans{$_},
772 (substr(unpack(q(B*), $data) . q(00000), 0, 432) =~ /....../g)),
773 $pad,
775 }' 2>/dev/null"
776 "Perl program to use for encoding a file.
777 Escape sequence %s is replaced with name of Perl binary.
781 "%s -e '
782 # This script contributed by Juanma Barranquero <lektu@terra.es>.
783 # Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
784 # Free Software Foundation, Inc.
785 use strict;
787 my %%trans = do {
788 my $i = 0;
789 map {($_, substr(unpack(q(B8), chr $i++), 2, 6))}
790 split //, q(ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/)
791 };
793 my %%bytes = map {(unpack(q(B8), chr $_), chr $_)} 0 .. 255;
797 # We are going to accumulate into $pending to accept any line length
798 # (we do not check they are <= 76 chars as the RFC says)
799 my $pending = q();
801 while (my $data = <STDIN>) {
802 chomp $data;
804 # If we find one or two =, we have reached the end and
805 # any following data is to be discarded
806 my $finished = $data =~ s/(==?).*/$1/;
807 $pending .= $data;
809 my $len = length($pending);
810 my $chunk = substr($pending, 0, $len & ~3);
811 $pending = substr($pending, $len & ~3 + 1);
813 # Easy method: translate from chars to (pregenerated) six-bit packets, join,
814 # split in 8-bit chunks and convert back to char.
815 print join q(),
816 map $bytes{$_},
817 ((join q(), map {$trans{$_} || q()} split //, $chunk) =~ /......../g);
819 last if $finished;
820 }' 2>/dev/null"
821 "Perl program to use for decoding a file.
822 Escape sequence %s is replaced with name of Perl binary.
827 while read file; do
830 else
832 fi
835 else
837 fi
838 done
840 "Script to check existence of VC related files.
841 It must be send formatted with two strings; the tests for file
842 existence, and file readability. Input shall be read via
843 here-document, otherwise the command could exceed maximum length
862 "A list of file types returned from the `stat' system call.
865 ;; New handlers should be added here. The following operations can be
866 ;; handled using the normal primitives: file-name-sans-versions,
867 ;; get-file-buffer.
888 . tramp-sh-handle-directory-files-and-attributes)
901 ;; `executable-find' is not official yet.
913 . tramp-sh-handle-insert-file-contents-literally)
920 . tramp-sh-handle-dired-recursive-delete-directory)
927 "Alist of handler functions.
930 ;; This must be the last entry, because `identity' always matches.
931 ;;;###tramp-autoload
935 ;;; File Name Handler Functions:
939 "Like `make-symbolic-link' for Tramp files.
940 If LINKNAME is a non-Tramp file, it is used verbatim as the target of
941 the symlink. If LINKNAME is a Tramp file, only the localname component is
942 used as the target of the symlink.
944 If LINKNAME is a Tramp file and the localname component is relative, then
945 it is expanded first, before the localname component is taken. Note that
946 this can give surprising results if the user/host for the source and
947 target of the symlink differ."
954 l 'file-error
957 ;; Do the 'confirm if exists' thing.
959 ;; What to do?
964 "File %s already exists; make it a link anyway? "
965 l-localname)))))
970 ;; If FILENAME is a Tramp name, use just the localname component.
979 ;; Right, they are on the same host, regardless of user, method, etc.
980 ;; We now make the link on the remote machine. This will occur as the user
981 ;; that FILENAME belongs to.
983 l
985 "cd %s && %s -sf %s %s"
987 ln
990 t))))
993 "Like `file-truename' for Tramp files."
999 ;; Use GNU readlink --canonicalize-missing where available.
1003 v
1008 ;; Use Perl implementation.
1016 v
1020 ;; Do it yourself. We bind `directory-sep-char' here for
1021 ;; XEmacs on Windows, which would otherwise use backslash.
1029 ;; Don't make the following value larger than
1030 ;; necessary. People expect an error message in a
1031 ;; timely fashion when something is wrong;
1032 ;; otherwise they might think that Emacs is hung.
1033 ;; Of course, correctness has to come first.
1035 symlink-target)
1046 method user host
1058 ;; It's a symlink, follow it.
1063 ;; If the symlink was absolute, we'll get a string like
1064 ;; "/user@host:/some/target"; extract the
1065 ;; "/some/target" part from it.
1069 v 'file-error
1075 steps)))
1077 ;; It's a file.
1081 v 'file-error
1084 ;; Combine list to form string.
1096 ;; Basic functions.
1099 "Like `file-exists-p' for Tramp files."
1107 v
1109 "%s %s"
1113 ;; CCC: This should check for an error condition and signal failure
1114 ;; when something goes wrong.
1115 ;; Daniel Pittman <daniel@danann.net>
1117 "Like `file-attributes' for Tramp files."
1119 ;; Don't modify `last-coding-system-used' by accident.
1125 v
1135 "Implement `file-attributes' for Tramp files using the ls(1) command."
1137 res-inode res-filemodes res-numlinks
1138 res-uid res-gid res-size res-symlink-target)
1141 vec
1150 ;; parse `ls -l' output ...
1154 ;; ... inode
1170 ;; ... file mode flags
1172 ;; ... number links
1174 ;; ... uid and gid
1184 ;; ... size
1186 ;; From the file modes, figure out other stuff.
1189 ;; if symlink, find out file name pointed to
1193 ;; return data gathered
1195 ;; 0. t for directory, string (name linked to) for symbolic
1196 ;; link, or nil.
1198 ;; 1. Number of links to file.
1199 res-numlinks
1200 ;; 2. File uid.
1201 res-uid
1202 ;; 3. File gid.
1203 res-gid
1204 ;; 4. Last access time, as a list of two integers. First
1205 ;; integer has high-order 16 bits of time, second has low 16
1206 ;; bits.
1207 ;; 5. Last modification time, likewise.
1208 ;; 6. Last status change time, likewise.
1210 ;; 7. Size in bytes (-1, if number is out of range).
1211 res-size
1212 ;; 8. File modes, as a string of ten letters or dashes as in ls -l.
1213 res-filemodes
1214 ;; 9. t if file's gid would change if file were deleted and
1215 ;; recreated. Will be set in `tramp-convert-file-attributes'
1216 t
1217 ;; 10. inode number.
1218 res-inode
1219 ;; 11. Device number. Will be replaced by a virtual device number.
1220 -1
1221 )))))
1225 "Implement `file-attributes' for Tramp files using a Perl script."
1230 vec
1236 "Implement `file-attributes' for Tramp files using stat(1) command."
1239 vec
1241 ;; On Opsware, pdksh (which is the true name of ksh there) doesn't
1242 ;; parse correctly the sequence "((". Therefore, we add a space.
1243 "( (%s %s || %s -h %s) && %s -c '((\"%%N\") %%h %s %s %%Xe0 %%Ye0 %%Ze0 %%se0 \"%%A\" t %%ie0 -1)' %s || echo nil)"
1254 "Like `set-visited-file-modtime' for Tramp files."
1261 coding-system-used)
1264 ;; '(-1 65535) means file doesn't exists yet.
1268 ;; We use '(0 0) as a don't-know value. See also
1269 ;; `tramp-do-file-attributes-with-ls'.
1274 v
1284 nil)))))
1286 ;; This function makes the same assumption as
1287 ;; `tramp-sh-handle-set-visited-file-modtime'.
1289 "Like `verify-visited-file-modtime' for Tramp files.
1290 At the time `verify-visited-file-modtime' calls this function, we
1291 already know that the buffer is visiting a file and that
1292 `visited-file-modtime' does not return 0. Do not call this
1293 function directly, unless those two cases are already taken care
1294 of."
1297 ;; There is no file visiting the buffer, or the buffer has no
1298 ;; recorded last modification time, or there is no established
1299 ;; connection.
1303 t
1311 ;; File exists, and has a known modtime.
1314 modtime
1315 ;; For compatibility, deal with both the old
1316 ;; (HIGH . LOW) and the new (HIGH LOW) return
1317 ;; values of `visited-file-modtime'.
1320 mt)))
1322 ;; Modtime has the don't know value.
1325 v
1333 attr
1336 ;; If file does not exist, say it is not modified if and
1337 ;; only if that agrees with the buffer's record.
1341 "Like `set-file-modes' for Tramp files."
1344 ;; FIXME: extract the proper text from chmod's stderr.
1346 v
1353 "Like `set-file-times' for Tramp files."
1359 time))
1360 ;; With GNU Emacs, `format-time-string' has an optional
1361 ;; parameter UNIVERSAL. This is preferred, because we
1362 ;; could handle the case when the remote host is located
1363 ;; in a different time zone as the local host.
1373 ;; We handle also the local part, because in older Emacsen,
1374 ;; without `set-file-times', this function is an alias for this.
1375 ;; We are local, so we don't need the UTC settings.
1383 "Set the ownership for FILENAME.
1384 If UID and GID are provided, these values are used; otherwise uid
1385 and gid of the corresponding user is taken. Both parameters must be integers."
1386 ;; Modern Unices allow chown only for root. So we might need
1387 ;; another implementation, see `dired-do-chown'. OTOH, it is mostly
1388 ;; working with su(do)? when it is needed, so it shall succeed in
1389 ;; the majority of cases.
1390 ;; Don't modify `last-coding-system-used' by accident.
1395 ;; If we are root on the local host, we can do it directly.
1403 "chown %d:%d %s" uid gid
1406 ;; We handle also the local part, because there doesn't exist
1407 ;; `set-file-uid-gid'. On W32 "chown" might not work.
1411 "chown" nil nil nil
1415 "Check, whether SELINUX is enabled on the remote host."
1426 "Like `file-selinux-context' for Tramp files."
1435 "%s -d -Z %s"
1443 ;; Return the context.
1444 context))))
1447 "Like `set-file-selinux-context' for Tramp files."
1464 ;; We always return nil.
1465 nil)
1467 ;; Simple functions using the `test' command.
1470 "Like `file-executable-p' for Tramp files."
1473 ;; Examine `file-attributes' cache to see if request can be
1474 ;; satisfied without remote operation.
1479 "Like `file-readable-p' for Tramp files."
1482 ;; Examine `file-attributes' cache to see if request can be
1483 ;; satisfied without remote operation.
1487 ;; When the remote shell is started, it looks for a shell which groks
1488 ;; tilde expansion. Here, we assume that all shells which grok tilde
1489 ;; expansion will also provide a `test' command which groks `-nt' (for
1490 ;; newer than). If this breaks, tell me about it and I'll try to do
1491 ;; something smarter about it.
1493 "Like `file-newer-than-file-p' for Tramp files."
1495 nil)
1497 t)
1498 ;; We are sure both files exist at this point.
1501 ;; We try to get the mtime of both files. If they are not
1502 ;; equal to the "dont-know" value, then we subtract the times
1503 ;; and obtain the result.
1509 ;; If one of them is the dont-know value, then we can
1510 ;; still try to run a shell command on the remote host.
1511 ;; However, this only works if both files are Tramp
1512 ;; files and both have the same method, same user, same
1513 ;; host.
1518 v 'file-error
1519 "Files %s and %s must have same method, user, host"
1520 file1 file2)))
1525 ;; Functions implemented using the basic functions above.
1528 "Like `file-directory-p' for Tramp files."
1529 ;; Care must be taken that this function returns `t' for symlinks
1530 ;; pointing to directories. Surely the most obvious implementation
1531 ;; would be `test -d', but that returns false for such symlinks.
1532 ;; CCC: Stefan Monnier says that `test -d' follows symlinks. And
1533 ;; I now think he's right. So we could be using `test -d', couldn't
1534 ;; we?
1535 ;;
1536 ;; Alternatives: `cd %s', `test -d %s'
1542 "Like `file-writable-p' for Tramp files."
1546 ;; Examine `file-attributes' cache to see if request can be
1547 ;; satisfied without remote operation.
1550 ;; If file doesn't exist, check if directory is writable.
1555 "Like `file-ownership-preserved-p' for Tramp files."
1559 ;; Return t if the file doesn't exist, since it's true that no
1560 ;; information would be lost by an (attempted) delete and create.
1564 ;; Directory listings.
1568 "Like `directory-files-and-attributes' for Tramp files."
1576 v localname
1586 v localname id-format))
1589 v localname id-format)))))))))
1590 result item)
1600 result
1605 "Implement `directory-files-and-attributes' for Tramp files using a Perl script."
1608 vec tramp-perl-directory-files-and-attributes
1612 vec
1616 object))
1620 "Implement `directory-files-and-attributes' for Tramp files using stat(1) command."
1623 vec
1626 ;; We must care about filenames with spaces, or starting with
1627 ;; "-"; this would confuse xargs. "ls -aQ" might be a solution,
1628 ;; but it does not work on all remote systems. Therefore, we
1629 ;; quote the filenames via sed.
1639 ;; This function should return "foo/" for directories and "bar" for
1640 ;; files.
1642 "Like `file-name-all-completions' for Tramp files."
1647 filename
1649 'list
1651 ;; Try cache entries for filename, filename with last
1652 ;; character removed, filename with last two characters
1653 ;; removed, ..., and finally the empty string - all
1654 ;; concatenated to the local directory name.
1657 tramp-completion-reread-directory-timeout)))
1659 ;; This is inefficient for very long filenames, pity
1660 ;; `reduce' is not available...
1663 'append
1668 v
1670 "file-name-all-completions"
1671 nil)))
1675 ;; Cache expired or no matching cache entry found so we need
1676 ;; to perform a remote operation.
1678 ;; Get a list of directories and files, including reliably
1679 ;; tagging the directories with a trailing '/'. Because I
1680 ;; rock. --daniel@danann.net
1682 ;; Changed to perform `cd' in the same remote op and only
1683 ;; get entries starting with `filename'. Capture any `cd'
1684 ;; error messages. Ensure any `cd' and `echo' aliases are
1685 ;; ignored.
1687 v
1691 v tramp-perl-file-name-all-completions
1697 ;; `read-file-name-completion-ignore-case'
1698 ;; is introduced with Emacs 22.1.
1701 'read-file-name-completion-ignore-case
1707 ;; `ls' with wildcard might fail with `Argument
1708 ;; list too long' error in some corner cases; if
1709 ;; `ls' fails after `cd' succeeded, chances are
1710 ;; that's the case, so let's retry without
1711 ;; wildcard. This will return "too many" entries
1712 ;; but that isn't harmful.
1713 " || %s -a 2>/dev/null)"
1714 " | while read f; do"
1720 ;; When `filename' is empty, just `ls' without
1721 ;; filename argument is more efficient than `ls *'
1722 ;; for very large directories and might avoid the
1723 ;; `Argument list too long' error.
1724 ;;
1725 ;; With and only with wildcard, we need to add
1726 ;; `-d' to prevent `ls' from descending into
1727 ;; sub-directories.
1729 "."
1734 ;; Now grab the output.
1738 ;; Check result code, found in last line of output
1742 ;; Grab error message from line before last line
1743 ;; (it was put there by `cd 2>&1')
1746 v 'file-error
1747 "tramp-sh-handle-file-name-all-completions: %s"
1749 ;; For peace of mind, if buffer doesn't end in `fail'
1750 ;; then it should end in `ok'. If neither are in the
1751 ;; buffer something went seriously wrong on the remote
1752 ;; side.
1755 v 'file-error
1756 "\
1757 tramp-sh-handle-file-name-all-completions: internal error accessing `%s': `%s'"
1763 ;; Because the remote op went through OK we know the
1764 ;; directory we `cd'-ed to exists
1768 ;; Because the remote op went through OK we know every
1769 ;; file listed by `ls' exists.
1773 result)
1775 ;; Store result in the cache
1778 "file-name-all-completions"
1779 result))))))))
1781 ;; cp, mv and ln
1785 "Like `add-name-to-file' for Tramp files."
1790 v 'file-error
1791 "add-name-to-file: %s"
1801 "File %s already exists; make it a new name anyway? "
1802 newname)))
1804 v2 'file-error
1809 v1
1812 "error with add-name-to-file, see buffer `%s' for details"
1817 preserve-uid-gid preserve-selinux-context)
1818 "Like `copy-file' for Tramp files."
1822 ;; At least one file a Tramp file?
1826 'copy filename newname ok-if-already-exists keep-date
1827 preserve-uid-gid preserve-selinux-context))
1828 ;; Compat section.
1831 'copy-file
1833 preserve-uid-gid preserve-selinux-context)))
1836 'copy-file
1844 "Like `copy-directory' for Tramp files."
1849 ;; When DIRNAME and NEWNAME are remote, they must have
1850 ;; the same method.
1855 ;; scp or rsync DTRT.
1869 ;; We must do it file-wise.
1873 ;; When newname did exist, we have wrong cached values.
1881 "Like `rename-file' for Tramp files."
1882 ;; Check if both files are local -- invoke normal rename-file.
1883 ;; Otherwise, use Tramp from local system.
1886 ;; At least one file a Tramp file?
1896 preserve-uid-gid preserve-selinux-context)
1897 "Copy or rename a remote file.
1898 OP must be `copy' or `rename' and indicates the operation to perform.
1899 FILENAME specifies the file to copy or rename, NEWNAME is the name of
1900 the new file (for copy) or the new name of the file (for rename).
1901 OK-IF-ALREADY-EXISTS means don't barf if NEWNAME exists already.
1902 KEEP-DATE means to make sure that NEWNAME has the same timestamp
1903 as FILENAME. PRESERVE-UID-GID, when non-nil, instructs to keep
1904 the uid and gid if both files are on the same host.
1905 PRESERVE-SELINUX-CONTEXT activates selinux commands.
1907 This function is invoked by `tramp-sh-handle-copy-file' and
1908 `tramp-sh-handle-rename-file'. It is an error if OP is neither
1909 of `copy' and `rename'. FILENAME and NEWNAME must be absolute
1910 file names."
1917 pr tm)
1927 filename newname)
1930 ;; Both are Tramp files.
1935 ;; Shortcut: if method, host, user are the same for
1936 ;; both files, we invoke `cp' or `mv' on the remote
1937 ;; host directly.
1940 op filename newname
1941 ok-if-already-exists keep-date preserve-uid-gid))
1943 ;; Try out-of-band operation.
1947 op filename newname keep-date))
1949 ;; No shortcut was possible. So we copy the file
1950 ;; first. If the operation was `rename', we go back
1951 ;; and delete the original file (if the copy was
1952 ;; successful). The approach is simple-minded: we
1953 ;; create a new buffer, insert the contents of the
1954 ;; source file into it, then write out the buffer to
1955 ;; the target file. The advantage is that it doesn't
1956 ;; matter which filename handlers are used for the
1957 ;; source and target file.
1960 op filename newname keep-date))))))
1962 ;; One file is a Tramp file, the other one is local.
1965 ;; Fast track on local machine.
1968 op filename newname
1969 ok-if-already-exists keep-date preserve-uid-gid))
1971 ;; If the Tramp file has an out-of-band method, the
1972 ;; corresponding copy-program can be invoked.
1975 op filename newname keep-date))
1977 ;; Use the inline method via a Tramp buffer.
1979 op filename newname keep-date))))
1982 ;; One of them must be a Tramp file.
1985 ;; Handle `preserve-selinux-context'.
1988 ;; In case of `rename', we must flush the cache of the source file.
1994 ;; When newname did exist, we have wrong cached values.
2001 "Use an Emacs buffer to copy or rename a file.
2002 First arg OP is either `copy' or `rename' and indicates the operation.
2003 FILENAME is the source file, NEWNAME the target file.
2004 KEEP-DATE is non-nil if NEWNAME should have the same timestamp as FILENAME."
2006 ;; We must disable multibyte, because binary data shall not be
2007 ;; converted.
2012 ;; We don't want the target file to be compressed, so we let-bind
2013 ;; `jka-compr-inhibit' to t.
2017 ;; KEEP-DATE handling.
2019 ;; Set the mode.
2021 ;; If the operation was `rename', delete the original file.
2026 "Invokes `cp' or `mv' on the remote system.
2027 OP must be one of `copy' or `rename', indicating `cp' or `mv',
2028 respectively. FILENAME specifies the file to copy or rename,
2029 NEWNAME is the name of the new file (for copy) or the new name of
2030 the file (for rename). Both files must reside on the same host.
2031 KEEP-DATE means to make sure that NEWNAME has the same timestamp
2032 as FILENAME. PRESERVE-UID-GID, when non-nil, instructs to keep
2033 the uid and gid from FILENAME."
2043 v 'file-error
2044 "Unknown operation `%s', must be `copy' or `rename'"
2045 op))))
2049 filename))
2053 newname))
2055 cmd-result)
2058 ;; Both files are on a remote host, with same user.
2070 ;; Mask cp -f error.
2072 tramp-operation-not-permitted-regexp nil t))
2073 cmd-result)
2075 nil v 'file-error
2076 "Copying directly failed, see buffer `%s' for details."
2079 ;; We are on the local host.
2082 ;; We can do it directly.
2090 localname1 localname2 ok-if-already-exists
2091 keep-date preserve-uid-gid)
2095 ;; We can do it directly with `tramp-send-command'
2103 ok-if-already-exists keep-date t)
2104 ;; We must change the ownership to the local user.
2110 ;; We need a temporary file in between.
2112 ;; Create the temporary file.
2120 "%s %s %s" cmd
2123 "Copying directly failed, see buffer `%s' for details."
2125 ;; We must change the ownership as remote user.
2126 ;; Since this does not work reliable, we also
2127 ;; give read permissions.
2138 localname1 tmpfile t
2139 keep-date preserve-uid-gid)
2141 'rename-file
2143 ;; We must change the ownership as local user.
2144 ;; Since this does not work reliable, we also
2145 ;; give read permissions.
2149 tmpfile
2153 ;; Move the temporary file to its destination.
2158 "cp -f -p %s %s"
2161 "Copying directly failed, see buffer `%s' for details."
2165 'rename-file
2168 ;; Save exit.
2173 ;; Set the time and mode. Mask possible errors.
2181 "Invoke rcp program to copy.
2182 The method used must be an out-of-band method."
2185 copy-program copy-args copy-env copy-keep-date port spec
2186 source target)
2191 ;; Both are Tramp files. We shall optimize it, when the
2192 ;; methods for filename and newname are the same.
2202 op filename tmpfile keep-date)
2205 ;; Save exit.
2213 ;; Expand hops. Might be necessary for gateway methods.
2217 ;; Check which ones of source and target are Tramp files.
2224 'file-name-directory
2228 ;; Check for port number. Until now, there's no need for handling
2229 ;; like method, user, host.
2234 ;; Compose copy command.
2236 ?h host ?u user ?p port
2244 copy-args
2246 nil
2250 x
2251 ;; " " is indication for keep-date argument.
2255 copy-env
2257 nil
2264 ;; Check for program.
2272 ;; Set variables for computing the prompt for reading
2273 ;; password.
2280 ;; The default directory must be remote.
2284 ;; Set the transfer process properties.
2293 ;; Use an asynchronous process. By this, password can
2294 ;; be handled. The default directory must be local, in
2295 ;; order to apply the correct `copy-program'. We don't
2296 ;; set a timeout, because the copying of large files can
2297 ;; last longer than 60 secs.
2305 copy-program
2312 ;; Reset the transfer process properties.
2316 ;; Handle KEEP-DATE argument.
2320 ;; Set the mode.
2325 ;; If the operation was `rename', delete the original file.
2332 "Like `make-directory' for Tramp files."
2344 "Like `delete-directory' for Tramp files."
2356 "Like `delete-file' for Tramp files."
2367 ;; Dired.
2369 ;; CCC: This does not seem to be enough. Something dies when
2370 ;; we try and delete two directories under Tramp :/
2372 "Recursively delete the directory given.
2373 This is like `dired-recursive-delete-directory' for Tramp files."
2375 ;; Run a shell command 'rm -r <localname>'
2376 ;; Code shamelessly stolen from the dired implementation and, um, hacked :)
2379 ;; Which is better, -r or -R? (-r works for me <daniel@danann.net>)
2381 v
2383 ;; Don't read the output, do it explicitely.
2384 nil t)
2385 ;; Wait for the remote system to return to us...
2386 ;; This might take a while, allow it plenty of time.
2388 ;; Make sure that it worked...
2396 "Like `dired-compress-file' for Tramp files."
2397 ;; OK-FLAG is valid for XEmacs only, but not implemented.
2398 ;; Code stolen mainly from dired-aux.el.
2404 ;; Emacs case
2406 ;; XEmacs has `dired-compression-method-alist', which is
2407 ;; transformed into `dired-compress-file-suffixes' structure.
2411 nil
2414 suffix)
2415 ;; See if any suffix rule matches this file name.
2423 nil)
2425 ;; We found an uncompression rule.
2430 ;; `dired-remove-file' is not defined in XEmacs.
2435 ;; We don't recognize the file as compressed, so compress it.
2436 ;; Try gzip.
2441 ;; `dired-remove-file' is not defined in XEmacs.
2451 "Like `insert-directory' for Tramp files."
2477 ;; If `full-directory-p', we just say `ls -l FILENAME'.
2478 ;; Else we chdir to the parent directory, then say `ls -ld BASENAME'.
2481 v
2484 switches
2486 localname
2489 v
2493 "Couldn't `cd %s'"
2497 v
2500 switches
2505 ""
2510 ;; We cannot use `insert-buffer-substring' because the Tramp
2511 ;; buffer changes its contents before insertion due to calling
2512 ;; `expand-file' and alike.
2517 ;; Check for "--dired" output.
2524 ;; Now read the numeric positions of file names.
2530 ;; End is followed by \n or by " -> ".
2532 ;; Remove trailing lines.
2538 ;; The inserted file could be from somewhere else.
2545 "."
2552 ;; Canonicalization of file names.
2555 "Like `expand-file-name' for Tramp files.
2557 the result will be a local, non-Tramp, filename."
2558 ;; If DIR is not given, use DEFAULT-DIRECTORY or "/".
2560 ;; Unless NAME is absolute, concat DIR and NAME.
2563 ;; If NAME is not a Tramp file, run the real handler.
2566 ;; Dissect NAME.
2570 ;; Tilde expansion if necessary. This needs a shell which
2571 ;; groks tilde expansion! The function `tramp-find-shell' is
2572 ;; supposed to find such a shell on the remote host. Please
2573 ;; tell me about it when this doesn't work on your system.
2577 ;; We cannot simply apply "~/", because under sudo "~/" is
2578 ;; expanded to the local user home directory but to the
2579 ;; root home directory. On the other hand, using always
2580 ;; the default user name for tilde expansion is not
2581 ;; appropriate either, because ssh and companions might
2582 ;; use a user name from the config file.
2594 ;; There might be a double slash, for example when "~/"
2595 ;; expands to "/". Remove this.
2598 ;; No tilde characters in file name, do normal
2599 ;; `expand-file-name' (this does "/./" and "/../"). We bind
2600 ;; `directory-sep-char' here for XEmacs on Windows, which would
2601 ;; otherwise use backslash. `default-directory' is bound,
2602 ;; because on Windows there would be problems with UNC shares or
2603 ;; Cygwin mounts.
2607 method user host
2612 ;;; Remote commands:
2615 "Like `executable-find' for Tramp files."
2620 "Flush file caches."
2627 ;; We use BUFFER also as connection buffer during setup. Because of
2628 ;; this, its original contents must be saved, and restored once
2629 ;; connection has been setup.
2631 "Like `start-file-process' for Tramp files."
2634 ;; When PROGRAM is nil, we just provide a tty.
2646 ;; BUFFER can be nil. We use a temporary buffer.
2649 ;; NAME must be unique as process name.
2653 ;; Set the new process properties.
2656 ;; Activate narrowing in order to save BUFFER contents.
2657 ;; Clear also the modification time; otherwise we might be
2658 ;; interrupted by `verify-visited-file-modtime'.
2663 ;; Send the command.
2665 ;; Check, whether a pty is associated.
2672 ;; Set sentinel and query flag for this process.
2676 ;; Return process.
2677 p))
2678 ;; Save exit.
2691 "Like `process-file' for Tramp files."
2692 ;; The implementation is not complete yet.
2698 ;; Compute command.
2701 ;; Determine input.
2706 ;; INFILE is on the same remote host.
2708 ;; INFILE must be copied to remote host.
2714 ;; Determine output.
2716 ;; Just a buffer.
2719 ;; A buffer name.
2722 ;; (REAL-DESTINATION ERROR-DESTINATION)
2724 ;; output.
2732 ;; stderr.
2737 ;; stderr is on the same remote host.
2740 ;; stderr must be copied to remote host. The temporary
2741 ;; file must be deleted after execution.
2744 method user host stderr))))
2745 ;; stderr to be discarded.
2748 ;; 't
2753 ;; Send the command. It might not return in time, so we protect
2754 ;; it. Call it in a subshell, in order to preserve working
2755 ;; directory.
2762 command)
2763 t t)
2765 ;; We should show the output anyway.
2772 ;; When the user did interrupt, we should do it also. We use
2773 ;; return code -1 as marker.
2777 ;; Handle errors.
2782 ;; Provide error file.
2785 ;; Cleanup. We remove all file cache values for the connection,
2786 ;; because the remote process could have changed them.
2789 ;; `process-file-side-effects' has been introduced with GNU
2790 ;; Emacs 23.2. If set to `nil', no remote file will be changed
2791 ;; by `program'. If it doesn't exist, we assume its default
2792 ;; value 't'.
2797 ;; Return exit status.
2800 ret))))
2804 "Like `call-process-region' for Tramp files."
2814 "Like `shell-command' for Tramp files."
2816 ;; We cannot use `shell-file-name' and `shell-command-switch',
2817 ;; they are variables of the local host.
2824 current-buffer-p
2834 "*Async Shell Command*"
2844 output-buffer))
2847 ;; Check whether there is another process running. Tramp does not
2848 ;; support 2 (asynchronous) processes in parallel.
2864 ;; Run the process.
2866 ;; Display output.
2872 ;; Run the process.
2874 ;; Insert error messages if they were separated.
2880 ;; This is like exchange-point-and-mark, but doesn't
2881 ;; activate the mark. It is cleaner to avoid activation,
2882 ;; even though the command loop would deactivate the mark
2883 ;; because we inserted text.
2887 ;; There's some output, display it.
2894 "Like `file-local-copy' for Tramp files."
2898 v 'file-error
2908 ;; `copy-file' handles direct copy and out-of-band methods.
2913 ;; Use inline encoding for file transfer.
2923 ;; If local decoding is a function, we call it. We
2924 ;; must disable multibyte, because
2925 ;; `uudecode-decode-region' doesn't handle it
2926 ;; correctly.
2932 filename loc-dec)
2934 ;; Unset `file-name-handler-alist'. Otherwise,
2935 ;; epa-file gets confused.
2940 ;; If tramp-decoding-function is not defined for this
2941 ;; method, we invoke tramp-decoding-command instead.
2943 ;; Unset `file-name-handler-alist'. Otherwise,
2944 ;; epa-file gets confused.
2950 filename loc-dec)
2953 loc-dec tmpfile2 tmpfile)
2956 ;; Set proper permissions.
2958 ;; Set local user ownership.
2961 ;; Oops, I don't know what to do.
2965 ;; Error handling.
2971 tmpfile)))
2973 ;; This is needed for XEmacs only. Code stolen from files.el.
2976 "Like `insert-file-contents-literally' for Tramp files."
2984 nil))
2991 ;; Save exit.
2997 "Like `make-auto-save-file-name' for Tramp files.
2998 Returns a file name in `tramp-auto-save-directory' for autosaving this file."
3009 ;; File name must be unique. This is ensured with Emacs 22 (see
3010 ;; UNIQUIFY element of `auto-save-file-name-transforms'); but for
3011 ;; all other cases we must do it ourselves.
3021 ;; Create directory.
3027 ;; Run plain `make-auto-save-file-name'. There might be an advice when
3028 ;; it is not a magic file name operation (since Emacs 22).
3029 ;; We must deactivate it temporarily.
3032 ;; else
3038 ;; CCC grok LOCKNAME
3041 "Like `write-region' for Tramp files."
3044 ;; Following part commented out because we don't know what to do about
3045 ;; file locking, and it does not appear to be a problem to ignore it.
3046 ;; Ange-ftp ignores it, too.
3047 ;; (when (and lockname (stringp lockname))
3048 ;; (setq lockname (expand-file-name lockname)))
3049 ;; (unless (or (eq lockname nil)
3050 ;; (string= lockname filename))
3051 ;; (error
3052 ;; "tramp-sh-handle-write-region: LOCKNAME must be nil or equal FILENAME"))
3054 ;; XEmacs takes a coding system as the seventh argument, not `confirm'.
3065 ;; `file-writable-p' calls `file-expand-file-name'. We
3066 ;; cannot use `tramp-run-real-handler' therefore.
3072 ;; Short track: if we are on the local host, we can run directly.
3074 'write-region
3078 ;; We use this to save the value of
3079 ;; `last-coding-system-used' after writing the tmp
3080 ;; file. At the end of the function, we set
3081 ;; `last-coding-system-used' to this saved value. This
3082 ;; way, any intermediary coding systems used while
3083 ;; talking to the remote shell or suchlike won't hose
3084 ;; this variable. This approach was snarfed from
3085 ;; ange-ftp.el.
3086 coding-system-used
3087 ;; Write region into a tmp file. This isn't really
3088 ;; needed if we use an encoding function, but currently
3089 ;; we use it always because this makes the logic
3090 ;; simpler.
3094 ;; If `append' is non-nil, we copy the file locally, and let
3095 ;; the native `write-region' implementation do the job.
3098 ;; We say `no-message' here because we don't want the
3099 ;; visited file modtime data to be clobbered from the temp
3100 ;; file. We call `set-visited-file-modtime' ourselves later
3101 ;; on. We must ensure that `file-coding-system-alist'
3102 ;; matches `tmpfile'.
3108 'write-region
3115 ;; Now, `last-coding-system-used' has the right value. Remember it.
3120 ;; The permissions of the temporary file should be set. If
3121 ;; filename does not exist (eq modes nil) it has been
3122 ;; renamed to the backup file. This case `save-buffer'
3123 ;; handles permissions.
3124 ;; Ensure, that it is still readable.
3127 tmpfile
3130 ;; This is a bit lengthy due to the different methods
3131 ;; possible for file transfer. First, we check whether the
3132 ;; method uses an rcp program. If so, we call it.
3133 ;; Otherwise, both encoding and decoding command must be
3134 ;; specified. However, if the method _also_ specifies an
3135 ;; encoding function, then that is used for encoding the
3136 ;; contents of the tmp file.
3141 ;; `copy-file' handles direct copy and out-of-band methods.
3152 ;; We keep the local file for performance
3153 ;; reasons, useful for "rsync".
3160 ;; Don't rename, in order to keep context in SELinux.
3165 ;; Use inline file transfer.
3167 ;; Encode tmpfile.
3171 ;; Use encoding function or command.
3175 loc-enc)
3178 ;; The following `let' is a workaround for the
3179 ;; base64.el that comes with pgnus-0.84. If
3180 ;; both of the following conditions are
3181 ;; satisfied, it tries to write to a local
3182 ;; file in default-directory, but at this
3183 ;; point, default-directory is remote.
3184 ;; (`call-process-region' can't write to
3185 ;; remote files, it seems.) The file in
3186 ;; question is a tmp file anyway.
3193 loc-enc)
3195 loc-enc tmpfile t))
3197 v 'file-error
3200 filename loc-enc))))
3202 ;; Send buffer into remote decoding command which
3203 ;; writes to remote file. Because this happens on
3204 ;; the remote host, we cannot use the function.
3206 v 3
3211 v
3217 v nil
3218 "Couldn't write region to `%s', decode using `%s' failed"
3219 filename rem-dec)
3220 ;; When `file-precious-flag' is set, the region is
3221 ;; written to a temporary file. Check that the
3222 ;; checksum is equal to that from the local tmpfile.
3226 ;; cksum runs locally, if possible.
3228 ;; cksum runs remotely.
3230 v
3233 ;; ... they are different.
3240 v 'file-error
3243 filename rem-dec)))))
3245 ;; Save exit.
3248 ;; That's not expected.
3251 v 'file-error
3254 method))))
3256 ;; Make `last-coding-system-used' have the right value.
3263 ;; We must protect `last-coding-system-used', now we have set it
3264 ;; to its correct value.
3266 ;; Set file modification time.
3270 ;; We must pass modtime explicitely, because filename can
3271 ;; be different from (buffer-file-name), f.e. if
3272 ;; `file-precious-flag' is set.
3278 ;; Set the ownership.
3288 ;; VC backends check for the existence of various different special
3289 ;; files. This is very time consuming, because every single check
3290 ;; requires a remote command (the file cache must be invalidated).
3291 ;; Therefore, we apply a kind of optimization. We install the file
3292 ;; name handler `tramp-vc-file-name-handler', which does nothing but
3293 ;; remembers all file names for which `file-exists-p' or
3294 ;; `file-readable-p' has been applied. A first run of `vc-registered'
3295 ;; is performed. Afterwards, a script is applied for all collected
3296 ;; file names, using just one remote command. The result of this
3297 ;; script is used to fill the file cache with actual values. Now we
3298 ;; can reset the file name handlers, and we make a second run of
3299 ;; `vc-registered', which returns the expected result without sending
3300 ;; any other remote command.
3302 "Like `vc-registered' for Tramp files."
3308 ;; There could be new files, created by the vc backend. We
3309 ;; cannot reuse the old cache entries, therefore.
3315 ;; Here we collect only file names, which need an operation.
3319 ;; Send just one command, in order to fill the cache.
3322 v
3331 v
3335 tramp-vc-registered-file-names
3341 ;; Second run. Now all `file-exists-p' or `file-readable-p'
3342 ;; calls shall be answered from the file cache. We unset
3343 ;; `process-file-side-effects' in order to keep the cache when
3344 ;; `process-file' calls appear.
3348 ;;;###tramp-autoload
3350 "Invoke remote-shell Tramp file name handler.
3351 Fall back to normal file name handler if no Tramp handler exists."
3368 "Invoke special file name handler, which collects files to be handled."
3376 ;; That's what we want: file names, for which checks are
3377 ;; applied. We assume, that VC uses only `file-exists-p' and
3378 ;; `file-readable-p' checks; otherwise we must extend the
3379 ;; list. We do not perform any action, but return nil, in
3380 ;; order to keep `vc-registered' running.
3383 nil)
3384 ;; Tramp file name handlers like `expand-file-name'. They
3385 ;; must still work.
3388 ;; Default file name handlers, we don't care.
3391 ;;; Internal Functions:
3394 "Define in remote shell function NAME implemented as SCRIPT.
3395 Only send the definition if it has not already been done."
3400 ;; The script could contain a call of Perl. This is masked with `%s'.
3402 vec
3412 auto-save-default)
3420 "Run `test' on the remote system, given a SWITCH and a FILENAME.
3421 Returns the exit code of the `test' program."
3424 v
3426 "%s %s %s"
3428 switch
3432 "Run `test'-like program on the remote system, given FILE1, FILE2.
3433 FORMAT-STRING contains the program name, switches, and place holders.
3434 Returns the exit code of the `test' program. Barfs if the methods,
3435 hosts, or files, disagree."
3439 v 'file-error
3444 v1
3451 "Searches for PROGNAME in $PATH and all directories mentioned in DIRLIST.
3452 First arg VEC specifies the connection, PROGNAME is the program
3453 to search for, and DIRLIST gives the list of directories to
3454 search. If IGNORE-TILDE is non-nil, directory names starting
3455 with `~' will be ignored. If IGNORE-PATH is non-nil, searches
3456 only in DIRLIST.
3458 Returns the absolute file name of PROGNAME, if found, and nil otherwise.
3460 This function expects to be in the right *tramp* buffer."
3463 ;; Check whether the executable is in $PATH. "which(1)" does not
3464 ;; report always a correct error code; therefore we check the
3465 ;; number of words it returns.
3473 ;; Remove all ~/foo directories from dirlist. In XEmacs,
3474 ;; `remove' is in CL, and we want to avoid CL dependencies.
3483 vec
3485 "do if test -x $d/%s -a -f $d/%s; "
3486 "then echo tramp_executable $d/%s; "
3495 result)))
3498 "Sets the remote environment PATH to existing directories.
3499 I.e., for each directory in `tramp-remote-path', it is tested
3500 whether it exists and if so, it is added to the environment
3501 variable PATH."
3507 ;; ------------------------------------------------------------
3508 ;; -- Communication with external shell --
3509 ;; ------------------------------------------------------------
3512 "Find a command on the remote host for checking if a file exists.
3513 Here, we are looking for a command which has zero exit status if the
3514 file exists and nonzero exit status otherwise."
3518 result)
3519 ;; The algorithm is as follows: we try a list of several commands.
3520 ;; For each command, we first run `$cmd /' -- this should return
3521 ;; true, as the root directory always exists. And then we run
3522 ;; `$cmd /this\ file\ does\ not\ exist ', hoping that the file indeed
3523 ;; does not exist. This should return false. We use the first
3524 ;; command we find that seems to work.
3525 ;; The list of commands to try is as follows:
3526 ;; `ls -d' This works on most systems, but NetBSD 1.4
3527 ;; has a bug: `ls' always returns zero exit
3528 ;; status, even for files which don't exist.
3529 ;; `test -e' Some Bourne shells have a `test' builtin
3530 ;; which does not know the `-e' option.
3531 ;; `/bin/test -e' For those, the `test' binary on disk normally
3532 ;; provides the option. Alas, the binary
3533 ;; is sometimes `/bin/test' and sometimes it's
3534 ;; `/usr/bin/test'.
3535 ;; `/usr/bin/test -e' In case `/bin/test' does not exist.
3559 result))
3562 "Opens shell SHELL."
3564 ;; Find arguments for this shell.
3567 item extra-args)
3576 t))
3577 ;; Setting prompts.
3585 "Opens a shell on the remote host which groks tilde expansion."
3592 ;; The default shell (ksh93) of OpenSolaris is buggy.
3602 vec 'file-error
3611 vec "remote-shell"
3615 ;; Utility functions.
3618 "Wait for shell prompt and barf if none appears.
3619 Looks at process PROC to see if a shell prompt appears in TIMEOUT
3620 seconds. If not, it produces an error message with the given ERROR-ARGS."
3623 proc timeout
3629 "Set up an interactive shell.
3630 Mainly sets the prompt and the echo correctly. PROC is the shell
3631 process to set up. VEC specifies the connection."
3633 ;; It is useful to set the prompt in the following command because
3634 ;; some people have a setting for $PS1 which /bin/sh doesn't know
3635 ;; about and thus /bin/sh will display a strange prompt. For
3636 ;; example, if $PS1 has "${CWD}" in the value, then ksh will
3637 ;; display the current working directory but /bin/sh will display
3638 ;; a dollar sign. The following command line sets $PS1 to a sane
3639 ;; value, and works under Bourne-ish shells as well as csh-like
3640 ;; shells. Daniel Pittman reports that the unusual positioning of
3641 ;; the single quotes makes it work under `rc', too. We also unset
3642 ;; the variable $ENV because that is read by some sh
3643 ;; implementations (eg, bash when called as sh) on startup; this
3644 ;; way, we avoid the startup file clobbering $PS1. $PROMPT_COMMAND
3645 ;; is another way to set the prompt in /bin/bash, it must be
3646 ;; discarded as well.
3648 vec
3651 ;; Disable echo.
3654 ;; Check whether the echo has really been disabled. Some
3655 ;; implementations, like busybox of embedded GNU/Linux, don't
3656 ;; support disabling.
3663 ;; Make sure backspaces and their echo are enabled and no line
3664 ;; width magic interferes with them.
3674 ;; Try to set up the coding system correctly.
3675 ;; CCC this can't be the right way to do it. Hm.
3681 ;; Use MULE to select the right EOL convention for communicating
3682 ;; with the process.
3685 cs-decode cs-encode)
3700 ;; Look for ^M and do something useful if found.
3702 ;; We have found a ^M but cannot frob the process coding system
3703 ;; because we're running on a non-MULE Emacs. Let's try
3704 ;; stty, instead.
3709 ;; Check whether the output of "uname -sr" has been changed. If
3710 ;; yes, this is a strong indication that we must expire all
3711 ;; connection properties. We start again with
3712 ;; `tramp-maybe-open-connection', it will be catched there.
3717 vec "uname"
3721 ;; Keep the debug buffer.
3728 ;; We call `tramp-get-buffer' in order to keep the debug buffer.
3731 vec 3
3732 "Connection reset, because remote host changed from `%s' to `%s'"
3733 old-uname new-uname)
3736 ;; Check whether the remote host suffers from buggy
3737 ;; `send-process-string'. This is known for FreeBSD (see comment in
3738 ;; `send_process', file process.c). I've tested sending 624 bytes
3739 ;; successfully, sending 625 bytes failed. Emacs makes a hack when
3740 ;; this host type is detected locally. It cannot handle remote
3741 ;; hosts, though.
3745 tramp-chunksize)
3753 ;; Set remote PATH variable.
3756 ;; Search for a good shell before searching for a command which
3757 ;; checks if a file exists. This is done because Tramp wants to use
3758 ;; "test foo; echo $?" to check if various conditions hold, and
3759 ;; there are buggy /bin/sh implementations which don't execute the
3760 ;; "echo $?" part if the "test" part has an error. In particular,
3761 ;; the OpenSolaris /bin/sh is a problem. There are also other
3762 ;; problems with /bin/sh of OpenSolaris, like redirection of stderr
3763 ;; in function declarations, or changing HISTFILE in place.
3764 ;; Therefore, OpenSolaris' /bin/sh is replaced by bash, when
3765 ;; detected.
3768 ;; Disable unexpected output.
3771 ;; IRIX64 bash expands "!" even when in single quotes. This
3772 ;; destroys our shell functions, we must disable it. See
3773 ;; <http://stackoverflow.com/questions/3291692/irix-bash-shell-expands-expression-in-single-quotes-yet-shouldnt>.
3777 ;; On BSD-like systems, ?\t is expanded to spaces. Suppress this.
3782 ;; Set `remote-tty' process property.
3788 ;; Dump stty settings in the traces.
3792 ;; Set the environment.
3796 unset item)
3809 ;; CCC: We should either implement a Perl version of base64 encoding
3810 ;; and decoding. Then we just use that in the last item. The other
3811 ;; alternative is to use the Perl version of UU encoding. But then
3812 ;; we need a Lisp version of uuencode.
3813 ;;
3814 ;; Old text from documentation of tramp-methods:
3815 ;; Using a uuencode/uudecode inline method is discouraged, please use one
3816 ;; of the base64 methods instead since base64 encoding is much more
3817 ;; reliable and the commands are more standardized between the different
3818 ;; Unix versions. But if you can't use base64 for some reason, please
3819 ;; note that the default uudecode command does not work well for some
3820 ;; Unices, in particular AIX and Irix. For AIX, you might want to use
3821 ;; the following command for uudecode:
3822 ;;
3823 ;; sed '/^begin/d;/^[` ]$/d;/^end/d' | iconv -f uucode -t ISO8859-1
3824 ;;
3825 ;; For Irix, no solution is known yet.
3833 "perl -e 'binmode STDIN; binmode STDOUT; print pack(q{u*}, join q{}, <>)'"
3835 "List of local coding commands for inline transfer.
3836 Each item is a list that looks like this:
3838 \(FORMAT ENCODING DECODING\)
3840 FORMAT is symbol describing the encoding/decoding format. It can be
3841 `b64' for base64 encoding, `uu' for uu encoding, or `pack' for simple packing.
3843 ENCODING and DECODING can be strings, giving commands, or symbols,
3844 giving functions. If they are strings, then they can contain
3846 filename will be put into the command line at that spot. If the
3847 specifier is not present, the input should be read from standard
3848 input.
3850 If they are functions, they will be called with two arguments, start
3851 and end of region, and are expected to replace the region contents
3856 ;; "-i" is more robust with older base64 from GNU coreutils.
3857 ;; However, I don't know whether all base64 versions do supports
3858 ;; this option.
3870 "perl -e 'binmode STDIN; binmode STDOUT; print pack(q{u*}, join q{}, <>)'"
3872 "List of remote coding commands for inline transfer.
3873 Each item is a list that looks like this:
3875 \(FORMAT ENCODING DECODING\)
3877 FORMAT is symbol describing the encoding/decoding format. It can be
3878 `b64' for base64 encoding, `uu' for uu encoding, or `pack' for simple packing.
3880 ENCODING and DECODING can be strings, giving commands, or symbols,
3881 giving variables. If they are strings, then they can contain
3883 filename will be put into the command line at that spot. If the
3884 specifier is not present, the input should be read from standard
3885 input.
3887 If they are variables, this variable is a string containing a Perl
3888 implementation for this functionality. This Perl program will be transferred
3892 "Find an inline transfer encoding that works.
3893 Goes through the list `tramp-local-coding-commands' and
3894 `tramp-remote-coding-commands'."
3898 loc-enc loc-dec rem-enc rem-dec litem ritem found)
3906 ;; If the local encoder or decoder is a string, the
3907 ;; corresponding command has to work locally.
3914 loc-enc nil nil))
3922 loc-dec nil nil))
3924 ;; Search for remote coding commands with the same format
3931 ;; Check if remote encoding and decoding commands can be
3932 ;; called remotely with null input and output. This makes
3933 ;; sure there are no syntax errors and the command is really
3934 ;; found. Note that we do not redirect stdout to /dev/null,
3935 ;; for two reasons: when checking the decoding command, we
3936 ;; actually check the output it gives. And also, when
3937 ;; redirecting "mimencode" output to /dev/null, then as root
3938 ;; it might change the permissions of /dev/null!
3946 vec 5
3959 vec 5
3962 vec
3964 t)
3972 ;; `rem-enc' and `rem-dec' could be a string meanwhile.
3977 ;; Did we find something?
3982 ;; Set connection properties.
3993 "Call the local encoding or decoding command.
3995 Otherwise, INPUT is passed via standard input.
3996 INPUT can also be nil which means `/dev/null'.
3997 OUTPUT can be a string (which specifies a filename), or t (which
3998 means standard output and thus the current buffer), or nil (which
3999 means discard it)."
4001 tramp-encoding-shell
4004 nil
4005 tramp-encoding-command-switch
4014 "List of compress and decompress commands for inline transfer.
4015 Each item is a list that looks like this:
4017 \(COMPRESS DECOMPRESS\)
4022 "Find an inline transfer compress command that works.
4023 Goes through the list `tramp-inline-compress-commands'."
4027 item compress decompress
4028 found)
4035 vec 5
4036 "Checking local compress command `%s', `%s' for sanity"
4037 compress decompress)
4043 vec 5
4044 "Checking remote compress command `%s', `%s' for sanity"
4045 compress decompress)
4051 ;; Did we find something?
4054 ;; Set connection properties.
4068 "Expands VEC according to `tramp-default-proxies-alist'.
4069 Gateway hops are already opened."
4072 item proxy)
4074 ;; Look for proxy hosts to be passed.
4079 ;; host
4082 ;; user
4086 ;; No more hops needed.
4088 ;; Replace placeholders.
4091 proxy
4096 ;; Add the hop.
4098 ;; Start next search.
4101 ;; Handle gateways.
4108 ;; Is the method prepared for gateways?
4112 vec 'file-error
4113 "Method `%s' is not supported for gateway access."
4115 ;; Add default port if needed.
4125 ;; Open the gateway connection.
4127 'target-alist
4131 ;; For the password prompt, we need the correct values.
4132 ;; Therefore, we must remember the gateway vector. But we
4133 ;; cannot do it as connection property, because it shouldn't
4134 ;; be persistent. And we have no started process yet either.
4137 ;; Foreign and out-of-band methods are not supported for multi-hops.
4150 vec 'file-error
4151 "Method `%s' is not supported for multi-hops."
4154 ;; In case the host name is not used for the remote shell
4155 ;; command, the user could be misguided by applying a random
4156 ;; hostname.
4162 ;; There are multi-hops.
4164 ;; The host name is used for the remote shell command.
4167 ;; The host is local. We cannot use `tramp-local-host-p'
4168 ;; here, because it opens a connection as well.
4171 v 'file-error
4172 "Host `%s' looks like a remote host, `%s' can only use the local host"
4173 host method)))
4175 ;; Result.
4176 target-alist))
4179 "Maybe open a connection VEC.
4180 Does not do anything if a connection is already open, but re-opens the
4181 connection if a previous connection has died for some reason."
4187 ;; If too much time has passed since last command was sent, look
4188 ;; whether process is still alive. If it isn't, kill it. When
4189 ;; using ssh, it can sometimes happen that the remote end has
4190 ;; hung up but the local ssh client doesn't recognize this until
4191 ;; it tries to send some data to the remote end. So that's why
4192 ;; we try to send a command from time to time, then look again
4193 ;; whether the process is really alive.
4204 ;; The error will be catched locally.
4212 ;; New connection must be opened.
4215 ;; We call `tramp-get-buffer' in order to get a debug buffer for
4216 ;; messages from the beginning.
4219 vec 3
4229 ;; Start new process.
4240 ;; This must be done in order to avoid our file name handler.
4246 tramp-encoding-shell))))
4251 ;; Check whether process is alive.
4256 ;; Now do all the connections as specified.
4277 ;; We don't create the temporary file. In fact,
4278 ;; it is just a prefix for the ControlPath option
4279 ;; of ssh; the real temporary file has another
4280 ;; name, and it is created and protected by ssh.
4281 ;; It is also removed by ssh, when the connection
4282 ;; is closed.
4285 p "temp-file"
4288 tramp-temp-name-prefix
4290 spec)
4292 ;; Add arguments for asynchrononous processes.
4296 ;; Add gateway arguments if necessary.
4300 ;; Check for port number. Until now, there's no need
4301 ;; for handling like method, user, host.
4306 ;; Set variables for computing the prompt for reading
4307 ;; password. They can also be derived from a gateway.
4312 ;; Replace login-args place holders.
4318 ?h l-host ?u l-user ?p l-port ?t tmpfile)
4319 command
4321 ;; We do not want to see the trailing local prompt in
4322 ;; `start-file-process'.
4324 command " "
4330 ;; Local shell could be a Windows COMSPEC. It
4331 ;; doesn't know the ";" syntax, but we must exit
4332 ;; always for `start-file-process'. "exec" does not
4333 ;; work either.
4336 ;; Send the command.
4342 ;; Next hop.
4345 ;; Make initial shell settings.
4349 "Send the COMMAND to connection VEC.
4350 Erases temporary buffer before sending the command. If optional
4351 arg NEVEROPEN is non-nil, never try to open the connection. This
4352 is meant to be used from `tramp-maybe-open-connection' only. The
4353 function waits for output unless NOOUTPUT is set."
4357 ;; We mark the command string that it can be erased in the output buffer.
4361 ;; Unset $PS1 when using here documents, in order to avoid
4362 ;; multiple prompts.
4364 ;; Send the command.
4370 "Wait for output from remote command."
4376 ;; be leading escape sequences, which must be ignored.
4378 ;; Sometimes, the commands do not return a newline but a
4379 ;; null byte before the shell prompt, for example "git
4380 ;; ls-files -c -z ...".
4385 ;; A simple-minded busybox has sent " ^H" sequences.
4386 ;; Delete them.
4391 ;; Delete the prompt.
4397 proc 'file-error
4398 "[[Remote prompt `%s' not found in %d secs]]"
4399 tramp-end-of-output timeout)
4401 proc 'file-error
4403 ;; Return value is whether end-of-output sentinel was found.
4404 found)))
4408 "Run COMMAND and check its exit status.
4409 Sends `echo $?' along with the COMMAND for checking the exit status. If
4410 COMMAND is nil, just sends `echo $?'. Returns the exit status found.
4412 If the optional argument SUBSHELL is non-nil, the command is
4413 executed in a subshell, ie surrounded by parentheses. If
4414 DONT-SUPPRESS-ERR is non-nil, stderr won't be sent to /dev/null."
4416 vec
4418 command
4420 "echo tramp_exit_status $?"
4434 "Run COMMAND, check exit status, throw error if exit status not okay.
4435 Similar to `tramp-send-command-and-check' but accepts two more arguments
4436 FMT and ARGS which are passed to `error'."
4441 "Run COMMAND and return the output, which must be a Lisp expression.
4442 In case there is no valid Lisp expression, it raises an error"
4445 ;; Read the expression.
4449 ;; Error handling.
4453 vec 'file-error
4454 "`%s' does not return a valid Lisp expression: `%s'"
4458 "Convert file-attributes ATTR generated by perl script, stat or ls.
4459 Convert file mode bits to string and set virtual device number.
4460 Return ATTR."
4462 ;; Convert last access time.
4467 ;; Convert last modification time.
4472 ;; Convert last status change time.
4477 ;; Convert file size.
4483 ;; Convert file mode bits to string.
4488 ;; Convert directory indication bit.
4491 ;; Convert symlink from `tramp-do-file-attributes-with-stat'.
4497 ;; Set file's gid change bit.
4505 ;; Convert inode.
4511 ;; Inodes can be incredible huge. We must hide this.
4513 ;; Set virtual device number.
4516 attr))
4519 "Check `file-attributes' caches for VEC.
4520 Return t if according to the cache access type ACCESS is known to
4521 be granted."
4529 result
4531 result
4543 file-attr
4545 ;; Not a symlink
4549 ;; World accessible.
4551 ;; User accessible and owned by user.
4555 ;; Group accessible and owned by user's
4556 ;; principal group.
4562 "Turn an integer representing a file mode into an ls(1)-like string."
4577 "Convert a permission bitset into a string.
4578 This is used internally by `tramp-file-mode-from-int'."
4589 "Converts STRING to shell glob pattern which ignores case."
4595 string
4599 "Create a file name suitable to be passed to `rcp' and workalikes."
4609 "Return t if this is an out-of-band method, nil otherwise."
4611 ;; It shall be an out-of-band method.
4613 ;; Either the file size is large enough, or (in rare cases) there
4614 ;; does not exist a remote encoding.
4619 ;; Variables local to connection.
4623 ;; When `tramp-own-remote-path' is in `tramp-remote-path', we
4624 ;; cache the result for the session only. Otherwise, the result
4625 ;; is cached persistently.
4628 vec)
4629 "remote-path"
4638 ;; Default if "getconf" is not available.
4641 vec 3
4649 ;; Default if "getconf" is not available.
4653 nil)))))
4655 ;; Replace place holder `tramp-default-remote-path'.
4663 ;; Replace place holder `tramp-own-remote-path'.
4671 ;; Remove double entries.
4678 ;; Remove non-existing directories.
4680 nil
4690 x))
4691 x))
4692 remote-path)))))
4701 dir
4711 result)
4713 ;; Check parameters. On busybox, "ls" output coloring is
4714 ;; enabled by default sometimes. So we try to disable it
4715 ;; when possible. $LS_COLORING is not supported there.
4716 ;; Some "ls" versions are sensible wrt the order of
4717 ;; arguments, they fail when "-al" is after the
4718 ;; "--color=never" argument (for example on FreeBSD).
4733 ;; Some "ls" versions are sensible wrt the order of arguments,
4734 ;; they fail when "-al" is after the "--dired" argument (for
4735 ;; example on FreeBSD).
4743 "test"
4747 ;; Does `test A -nt B' work? Use abominable `find' construct if it
4748 ;; doesn't. BSD/OS 4.0 wants the parentheses around the command,
4749 ;; for otherwise the shell crashes.
4761 vec
4784 ;; We must check also for some Perl modules.
4792 result)))
4799 tmp)
4800 ;; Check whether stat(1) returns usable syntax. %s does not
4801 ;; work on older AIX systems.
4804 ;; We don't want to display an error message.
4813 result)))
4821 ;; We don't want to display an error message.
4826 result))))
4839 result)
4841 ;; Check POSIX parameter.
4850 vec
4856 ;; The command might not always return a number.
4862 vec
4868 ;; The command might not always return a number.
4877 ;; Some predefined connection properties.
4879 "Return the compress command related to PROP.
4880 PROP is either `inline-compress' or `inline-decompress'. SIZE is
4881 the length of the file to be compressed.
4883 If no corresponding command is found, nil is returned."
4891 "Return the coding command related to PROP.
4892 PROP is either `remote-encoding', `remode-decoding',
4893 `local-encoding' or `local-decoding'.
4895 SIZE is the length of the file to be coded. Depending on SIZE,
4896 compression might be applied.
4898 If no corresponding command is found, nil is returned.
4899 Otherwise, either a string is returned which contains a `%s' mark
4900 to be used for the respective input or output file; or a Lisp
4901 function cell is returned to be applied on a buffer."
4902 ;; We must catch the errors, because we want to return `nil', when
4903 ;; no inline coding is found.
4911 compress)
4912 ;; The connection property might have been cached. So we must
4913 ;; send the script to the remote side - maybe.
4921 ;; Check for the `compress' command.
4923 ;; Return the value.
4939 'call-process-region beg end
4944 coding)
4954 ;;; Integration of eshell.el:
4959 ;; eshell.el keeps the path in `eshell-path-env'. We must change it
4960 ;; when `default-directory' points to another host.
4962 "Set `eshell-path-env' to $PATH of the host related to `default-directory'."
4967 'identity
4988 ;;; TODO:
4990 ;; * Don't use globbing for directories with many files, as this is
4991 ;; likely to produce long command lines, and some shells choke on
4992 ;; long command lines.
4993 ;; * Make it work for different encodings, and for different file name
4994 ;; encodings, too. (Daniel Pittman)
4995 ;; * Don't search for perl5 and perl. Instead, only search for perl and
4996 ;; then look if it's the right version (with `perl -v').
4997 ;; * When editing a remote CVS controlled file as a different user, VC
4998 ;; gets confused about the file locking status. Try to find out why
4999 ;; the workaround doesn't work.
5000 ;; * Allow out-of-band methods as _last_ multi-hop. Open a connection
5001 ;; until the last but one hop via `start-file-process'. Apply it
5002 ;; also for ftp and smb.
5003 ;; * WIBNI if we had a command "trampclient"? If I was editing in
5004 ;; some shell with root priviledges, it would be nice if I could
5005 ;; just call
5006 ;; trampclient filename.c
5007 ;; as an editor, and the _current_ shell would connect to an Emacs
5008 ;; server and would be used in an existing non-priviledged Emacs
5009 ;; session for doing the editing in question.
5010 ;; That way, I need not tell Emacs my password again and be afraid
5011 ;; that it makes it into core dumps or other ugly stuff (I had Emacs
5012 ;; once display a just typed password in the context of a keyboard
5013 ;; sequence prompt for a question immediately following in a shell
5014 ;; script run within Emacs -- nasty).
5015 ;; And if I have some ssh session running to a different computer,
5016 ;; having the possibility of passing a local file there to a local
5017 ;; Emacs session (in case I can arrange for a connection back) would
5018 ;; be nice.
5019 ;; Likely the corresponding Tramp server should not allow the
5020 ;; equivalent of the emacsclient -eval option in order to make this
5021 ;; reasonably unproblematic. And maybe trampclient should have some
5022 ;; way of passing credentials, like by using an SSL socket or
5023 ;; something. (David Kastrup)
5024 ;; * Reconnect directly to a compliant shell without first going
5025 ;; through the user's default shell. (Pete Forman)
5026 ;; * How can I interrupt the remote process with a signal
5027 ;; (interrupt-process seems not to work)? (Markus Triska)
5028 ;; * Avoid the local shell entirely for starting remote processes. If
5029 ;; so, I think even a signal, when delivered directly to the local
5030 ;; SSH instance, would correctly be propagated to the remote process
5031 ;; automatically; possibly SSH would have to be started with
5032 ;; "-t". (Markus Triska)
5033 ;; * It makes me wonder if tramp couldn't fall back to ssh when scp
5034 ;; isn't on the remote host. (Mark A. Hershberger)
5035 ;; * Use lsh instead of ssh. (Alfred M. Szmidt)
5036 ;; * Optimize out-of-band copying, when both methods are scp-like (not
5037 ;; rsync).
5038 ;; * Keep a second connection open for out-of-band methods like scp or
5039 ;; rsync.
5040 ;; * Try telnet+curl as new method. It might be useful for busybox,
5041 ;; without built-in uuencode/uudecode.
5042 ;; * Try ssh+netcat as out-of-band method.
5044 ;;; tramp-sh.el ends here